/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.dxf2.metadata.objectbundle.validation;

import static java.util.Collections.singletonList;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.hisp.dhis.common.IdentifiableObject;
import org.hisp.dhis.common.IdentifiableObjectUtils;
import org.hisp.dhis.dxf2.metadata.objectbundle.ObjectBundle;
import org.hisp.dhis.feedback.ErrorReport;
import org.hisp.dhis.feedback.ObjectReport;

/**
 * @author Luciano Fiandesio
 */
public class ValidationUtils {
  private ValidationUtils() {
    throw new UnsupportedOperationException("util");
  }

  public static <T> List<T> joinObjects(List<T> persistedObjects, List<T> nonPersistedObjects) {
    if (persistedObjects.isEmpty()) {
      return nonPersistedObjects;
    }
    if (nonPersistedObjects.isEmpty()) {
      return persistedObjects;
    }
    return Stream.concat(persistedObjects.stream(), nonPersistedObjects.stream())
        .collect(Collectors.toList());
  }

  public static ObjectReport createObjectReport(
      List<ErrorReport> reports, IdentifiableObject object, ObjectBundle bundle) {
    ObjectReport objectReport = new ObjectReport(object, bundle);
    objectReport.setDisplayName(IdentifiableObjectUtils.getDisplayName(object));
    objectReport.addErrorReports(reports);
    return objectReport;
  }

  public static ObjectReport createObjectReport(
      ErrorReport report, IdentifiableObject object, ObjectBundle bundle) {
    return createObjectReport(singletonList(report), object, bundle);
  }
}
